Background: Historically, Roux-en-Y gastric bypass (RYGB) has been considered the gold standard of bariatric surgery (BS). This procedure acts as a mixed restrictive and malabsorptive operation.
Methods: This retrospective cohort study included 410 morbidly obese patients (BMI > 40 kg/m or BMI > 35 kg/m along with at least one major comorbidity) who underwent primary laparoscopic RYGB surgery from 2009 to 2015 by a single surgery team.